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antlinker
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taskpool
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taskpool.go
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taskpool.go
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package taskpool
import (
"errors"
"fmt"
"time"
)
// ErrStop 任务池已经停止错误
//放入元素时如果任务池已停止会在tokener中返回该错误
var ErrStop = errors.New("任务池已经停止")
// ErrExec 任务池执行失败错误
type ErrExec struct {
err interface{}
}
//执行错误
func (e *ErrExec) Error() string {
return fmt.Sprintf("任务执行失败:%v", e.err)
}
// TaskLevel 执行任务级别
type TaskLevel int64
const (
// TaskLevelLowest 最低级别任务
TaskLevelLowest TaskLevel = iota * 1024
// TaskLevelLower 较低级别任务
TaskLevelLower
// TaskLevelNormal 正常级别任务
TaskLevelNormal
// TaskLevelHigher 较高级别任务
TaskLevelHigher
// TaskLevelHighest 最高级别任务
TaskLevelHighest
)
// Option 分片有限任务池配置参数
type Option struct {
//进入任务队列的缓冲大小
PutBuffNum int
//任务队列分片内最大任务数
SliceElemMaxNum int
//任务队列分片总数
SliceTotalNum int
//任务go程数量
TaskPoolNum int64
}
// TaskPooler 异步任务池
type TaskPooler interface {
//将任务放入池中
//返回一个Tokener令牌,可以查看任务执行情况
Put(task Tasker) Tokener
//停止任务池
Stop()
}
// Tasker 执行任务
type Tasker interface {
//执行任务级别
Lvl() TaskLevel
//执行任务方法
Exec() (interface{}, error)
}
// Tokener 执行任务令牌
//可以查询任务执行情况
type Tokener interface {
//等待任务执行完成
Wait()
//任务执行结果
Result() interface{}
//任务执行是否完成
//true 完成,false未完成
IsEnd() bool
//任务创建时间
CreTime() time.Time
//任务完成时间
EndTime() time.Time
//是否执行失败,error为nil执行成功,否则为失败,error表示失败原因
Error() error
}
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